[MTD] NAND remove write_byte/word function from nand_chip
The previous change of the command / hardware control allows to
remove the write_byte/word functions completely, as their only
user were nand_command and nand_command_lp.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/drivers/mtd/nand/au1550nd.c b/drivers/mtd/nand/au1550nd.c
index 275453e..3122833 100644
--- a/drivers/mtd/nand/au1550nd.c
+++ b/drivers/mtd/nand/au1550nd.c
@@ -40,6 +40,7 @@
static struct mtd_info *au1550_mtd = NULL;
static void __iomem *p_nand;
static int nand_width = 1; /* default x8 */
+static void (*au1550_write_byte)(struct mtd_info *, u_char);
/*
* Define partitions for flash device
@@ -129,21 +130,6 @@
}
/**
- * au_write_word - write one word to the chip
- * @mtd: MTD device structure
- * @word: data word to write
- *
- * write function for 16bit buswith without
- * endianess conversion
- */
-static void au_write_word(struct mtd_info *mtd, u16 word)
-{
- struct nand_chip *this = mtd->priv;
- writew(word, this->IO_ADDR_W);
- au_sync();
-}
-
-/**
* au_write_buf - write buffer to chip
* @mtd: MTD device structure
* @buf: data buffer
@@ -379,9 +365,9 @@
column -= 256;
readcmd = NAND_CMD_READ1;
}
- this->write_byte(mtd, readcmd);
+ au1550_write_byte(mtd, readcmd);
}
- this->write_byte(mtd, command);
+ au1550_write_byte(mtd, command);
/* Set ALE and clear CLE to start address cycle */
au1550_hwcontrol(mtd, NAND_CTL_CLRCLE);
@@ -394,10 +380,10 @@
/* Adjust columns for 16 bit buswidth */
if (this->options & NAND_BUSWIDTH_16)
column >>= 1;
- this->write_byte(mtd, column);
+ au1550_write_byte(mtd, column);
}
if (page_addr != -1) {
- this->write_byte(mtd, (u8)(page_addr & 0xff));
+ au1550_write_byte(mtd, (u8)(page_addr & 0xff));
if (command == NAND_CMD_READ0 ||
command == NAND_CMD_READ1 ||
@@ -415,11 +401,11 @@
au1550_hwcontrol(mtd, NAND_CTL_SETNCE);
}
- this->write_byte(mtd, (u8)(page_addr >> 8));
+ au1550_write_byte(mtd, (u8)(page_addr >> 8));
/* One more address cycle for devices > 32MiB */
if (this->chipsize > (32 << 20))
- this->write_byte(mtd, (u8)((page_addr >> 16) & 0x0f));
+ au1550_write_byte(mtd, (u8)((page_addr >> 16) & 0x0f));
}
/* Latch in address */
au1550_hwcontrol(mtd, NAND_CTL_CLRALE);
@@ -597,8 +583,7 @@
this->options |= NAND_BUSWIDTH_16;
this->read_byte = (!nand_width) ? au_read_byte16 : au_read_byte;
- this->write_byte = (!nand_width) ? au_write_byte16 : au_write_byte;
- this->write_word = au_write_word;
+ au1550_write_byte = (!nand_width) ? au_write_byte16 : au_write_byte;
this->read_word = au_read_word;
this->write_buf = (!nand_width) ? au_write_buf16 : au_write_buf;
this->read_buf = (!nand_width) ? au_read_buf16 : au_read_buf;